macfb: Do not overflow fb_fix_screeninfo.id
macfb: Do not overflow fb_fix_screeninfo.id

Don't overflow the 16-character fb_fix_screeninfo id string (fixes some 
console erasing and blanking artifacts). Have the ID default to "Unknown" 
on machines with no built-in video and no nubus devices. Check for 
fb_alloc_cmap failure.

Signed-off-by: Finn Thain <94052abb058aed443995dc4f8d236e022112765d@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <0da414d9d963da4039c2a0525b1844228075aa58@linux-m68k.org>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas